Thresher-tooth.



G. H. RBGHTBNBAGH.

THRESHEB. TOOTH. APPLICATION FILED JULY 8, 1907.

Patented Feb. 2, 1909.

. 2 SHEETS-SHEET 2.

' spear of wheat is caught, during its passage cave are placed in opposition and conse-A To all 'whom it may conceraff y @me shorten-nfnironrnNBAoii, or BRIDGEWATER, Iowa.

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VSpecification of `:Letters Patent.

Patented Feb. 2, 190e.

Aispiication flied July s, i907, serial No.. 382,645.

Be it known that I, GEORGEI-I. RECHTEN'- BAoH, a citizen of the United States, residing at Bridgewater, in the county of Adair, State of Iowa, have invented certain new and useful Improvements in rIhresher-Teeth; andI l' and opening only through the outer end ofA the tooth but I have found that in the use of such a construction of tooth, the head of a between the cylinder and concave, mvone of the corrugations and that it may or may not be hulledv according to its size and to the degree -in which it is received inthe corrugation. Considerable wheat is therefore wasted owing to the fact that it is practically protected during such passage.

In carrying out my invention I em loy a tooth including a shank and a flattenedD body portion whichis provided with corrugationsr extending parall with respect to each other and with respect to one edge of the said body portion which edgeis oblique with respect to an opposite edge, the corrugations being in this manner formed to open through the said opposite edge andthrough `the outer end of the body portion.

The teeth of the cylinder and` of the conquently as the teeth of the two velements pass,

the heads of the spears of wheat are actedA upon in a more positive manner than is at present the case.

In the accompanying drawings, Figure 1 is a vertical sectional view through the cylinder and concave for the threshing machine showin the manner of positioning the teeth upon t e two elements, Fig. 2 is a detail side elevation of one of the teeth and showing in dotted lines the relative position of another tooth at the time lof passing the first mentioned tooth, Fig. 3 isa front edge A elevation ofl oneof the teeth, Fig. 4 is a horizontal sectional view through the body portion of one of the teeth, and, Fig. 5 is a yside elevation of a slightly modified form of `In the form of my invention illustrated in the first four figures of the drawings the tooth isshown as comprising a shank 6 which is threaded for the engagement thereon of a nut 7 and which is shouldered as at 8 to abut the working face of the cylinder or concave toV which the tooth is applied as may be the case. The tooth also comprises a flat body portion 9 which has its forward edge 10 extended vertically and its rear edge oblique as indicated at 11.

rality of corrugations 12 and these corrugations extend parallel with respect to each other and in lanes parallel to the obli ue rear edge 11 of t `e body of the tooth. T e corrugations therefore extend in such a direction that their valleys open through the forward side of the tooth body and also through the outer end of the tooth.

As clearly shown in Fig. 2 of the drawings,

Vas each tooth upon the cylinder passes each tooth upon the concave, the ridges and valleys formed by corrugating the working faces of the two bodies are co-incident but this relation is gradually changed as the cylinder `rotates so' that the corrugations become non-coincident.

In the form of my invention illustrated in Fig. 5 of the drawings, the working faces of the tooth body are formed of intersecting corrugations 13 and 14, the corrugations 13V being extended, as in the case of the corrugations 12 in parallel relation with respect to each other and with res ect to the oblique rear edge ofthe said body o the tooth and the corrugations 14 intersect these corrugations 13 linplanes substantially at right angles thereto, they being also parallel with respect to each other.

What is claimed is YVA tooth of the class described comprising a' `shank formed with an annular bearing shoulder of increased diameter with respect to the shank, a flattened body portion formed on the shoulder and having a front edge parallel Ywith said shank and an inwardly inclined rearedge disposed diagonally with respect to'said shank, a plurality of forwardly di- I `ormed in each of the. side or working faces of the body 9 is a plurected ribs forming teeth on opposite side engaging the shank for securing the bearing faces of the body and extending longitudishoulder against a support. 10 nally throughout the saine in parallelism In testimony whereof, I affix my signature, with said inclined reati edge to intersect the I in presence of two witnesses.

front and end edges of said body at an angle, GEORGE H. RECHTENBACH.

and also to present an increased number of Witnesses:

ribs at the free end edge thereof With respect W. J. SIMPSON,

to its opposite end edge, and a threaded nut XVM. RECHTENBACH. 

